Transcript
AUDIO MIXER 6x1
MODEL 51003 FEATURES
Six Transformer Isolated Mic/Line Inputs Dual Transformer Isolated Outputs
Separate Auxilliary Input With Adjustable Gain Built-In Limiter, Tone Controls, Lo-Cut Filters, And Mute Circuit. External UL Listed Power Transformer For Lowest Possible Noise
The Model 51003 Audio Mixer has been designed to fit multiple applications in small venues, especially Houses of Worship. The unit incorporates an extensive array of features to allow for almost any situation which may arise in a small venue. The input section has six transformer isolated inputs, each individually selectable for mic or line use. When in the mic mode, the built-in phantom power may be selected on an individual input basis. The unit also has a separate auxilliary input. The gain of each input is individually adjustable. The mic/line inputs also have Lo-Cut filters, selectable via dip switches. The auxilliary input is normaled thru a front panel phone jack. This feature allows instant access to the house PA system. Input #1 has an automatic mute circuit, which can be activated via another dip switch. When activated, any signal applied to input #1 will automatically mute inputs 2 to 6, and the AUX input. There is also provision for an external manual mute switch to activate the mute circuit at the same point. Also, the mix buss is accessible for linking additional units to create custom mixing configurations.
PROTECH
The output section starts with an effects send/return, for inserting signal processors. The next stage is the tone control circuit, with controls for both high and low frequency adjustments mounted on the front panel. Following the tone control section is the built-in limiter, which may be activated via a slide switch. The output section consists of two independently adjustable, transformer isolated output channels. Output B has a built-in VCA circuit, which allows the unit to function with remote control of the output B level. The meter section has a 12 segment LED bargraph, to allow accurate setting of output levels. To aid in this setting, the Model 51003 has a built-in oscillator which is factory set to provide a zero dB signal to both output sections. By adjusting the output levels first, using the on-board oscillator, adjusting the inputs becomes much simpler, and prevents overload of the following circuits. The LED meter is factory adjusted to read 0dB, when the output level is +4dBm. For additional information or applications assistance contact: SALES ENGINEERING Engineering Data
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MODEL 51003 AUDIO MIXER 6 x 1
www.protechaudio.com
Adjustable Gain On Each Input
1/06
MODEL 51003 M/L
AUDIO MIXER, 6 x 1 LO CUT
EXT. MUTE SWITCH
MUTE
OUTPUTS M/L
M/L
EQ
LO CUT
A
LIM
LO CUT
B
INPUTS M/L
LO CUT
M/L
LO CUT
M/L
LO CUT
EFFECTS SEND VCA
METER A/B OSC
REMOTE POT
AUX
BLOCK DIAGRAM SPECIFICATIONS GAIN.................................................................... 0-60dB, Adjustable MAXIMUM INPUT LEVEL................... +20dB INPUT IMPEDANCE........................... Mic = 150 Ohms Nominal Line = 10K Ohms, Nominal MAXIMUM OUTPUT........................... +20dBm OUTPUT IMPEDANCE....................... 200 Ohms FREQUENCY RESPONSE................. +0, -1dB, 20Hz To 20KHz DISTORTION..................................... 0.1% Maximum @ +20dBm Out, and 15dB of Gain NOISE................................................................... -82dB Below +4dBm Out, and 15dB of Gain POWER REQUIREMENTS................. 117VAC @ 0.5 Amp. SIZE...................................................................... 1.75" x 19" x 10" OPERATING TEMPERATURE............ -20 To +75 Degrees C ARCHITECT'S & ENGINEER'S SPECIFICATIONS The audio mixer shall have 6 mic/line inputs selectable via on-board slide switches. The mixer shall also have an auxilliary input which is normalled thru a front panel phone jack. Each mic/line input shall have a locut filter, independently selectable for each M/L input. Each M/L input shall be balanced, transformer isolated. The gain of each M/L input, and the AUX input shall be adjustable via front panel mounted potentiometers. The mixing section shall incorporate an equalizer section with both bass and treble controls, mounted on the front panel. The mixing section shall also have a built-in oscillator, which is activated via a front panel mounted push-button switch.
The output section of the mixer shall have a built-in limiter, which may be activated via an on-board switch. The limiter shall be placed in the signal chain ahead of the output level controls. The mixer shall have two individually adjustable outputs. the outputs shall be balanced transformer isolated, and capable of driving a 600 ohm load to +20dB The mixer shall incorporate a 12 segment LED meter capable of metering either the A or B output, with selection of the meter function selectable via an onboard pushbutton switch. The audio mixer shall be : PROTECH AUDIO Corporation Model 51003
ACCESSORIES AUTOMATIC LEVEL CONTROL...............................MODEL 65306 Senses ambient noise in paging area, & automatically adjusts paging level.
Protech Audio Corporation PO Box 597, 192 Cedar River Road Indian Lake, New York 12842 Voice 518-648-6410 Fax 518-648-6395 Web - www.protechaudio.com
Toolbox Series Audio Distribution Amplifiers................Model 5117 & 5126 Designed to provide additional audio feeds from mixers.
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